A.17.6% B.85% C.115% D.117.6%
A.綜合指數(shù) B.平均指標(biāo)指數(shù) C.加權(quán)算術(shù)平均數(shù)指數(shù) D.加權(quán)調(diào)和平均數(shù)指數(shù)